Web-supporting device.



H. A. W. WOOD.

WEB SUPPORTING DEVICE.

. APPLICATION HLED JULY 2. 191s.

Ptented Aug. 21, 1917.

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HENRY A. WISE Woon, OP NEW YORK,

Woon NEWSPAPER MACHINERY CORPORATION, 0E

TION OF VIRGINIA.

N. Y., 'Ass'IGNoR "RY Speceation of Letters Patent.

A ME'sN-E ASSIGNMENTS, To NEWYORK, N. Y., A4 CORPORA- WEELSUPPORTING DEVICE. l

Patented Aug. 21, 1917.

Application filed J'uly 2, 1913. Serial No. 777,003.

To all whom t may concern:

Be it known that I, HENRY A. WISE WOOD, a citizen of the United States, residing at New York, in the county of New York and State of New York, have invented a new and useful lNeb-Supporting Device, of which the following is a specication.

This invention relates to the guiding and supporting of a web in a printing press. The principal objects of the invention are to provide for reducing the breakage of the web and thus materially increasing the output of the machine. This object is accomplished according to this invention by preventing the margins of the web from receiving any undue strain as they pass over the web rolls and turning bars.

Reference is to be had to the accompanying drawings in which- Figure l is an elevation of a web roll constructed in accordance with this invention with the web passing thereover:

Fig. 2 is an enlarged longitudinal sectional view of a portion thereof:

Fig. 3 is a plan of a pair of turning bars also constructed in accordance with this invention showing the web passing thereover.

In printing on web presses much delay ordinarily is caused on account of the breakage of the paper., As a rule the break starts from one edge of the web and then the whole sheet gives way. This is caused by the fact that the edges of the web are calendered harder than the inside portion thereof and the further fact that the web rolls are handled roughly in transportation and their ends bruised so as to start small cracks at the edges. Another cause which contributes to this difficulty is that the paper guiding rolls naturally bend a little under the tension of the paper so as to bring more strain at the edges of the web. v

In order to reduce the effect of these dithculties according to this invention the guiding members over which the web passes, including the web rolls and turning bars, are made in such a way that the greatest strain cannot come on the edges of the web while it is being passed over them. In other words, these surfaces are formed to engage the web at points between the edges and practically not to engage it at the margins themselves.

Referring to the drawings, the tension is distributed over the area of the web between the margins by making the web rolls l0 and also the stationary turning bars 1l with circumferential grooves 12 and 13 respectively. These grooves or depressions are turned underneath each of the margins, and need not be more than a few thousandths of an inch in depth. The grooves 12 on the rolls are made exactly circumferential but the grooves 13 on the turning barsv are at an angle to accommodate the direction of the margins over them. In othei` words, in all Ycases these grooves or depressions extend in the direction of travel on the web and in positions to remain at all times under the margins thereof.

This brings the main strain on the body of the web and even if the margins are cracked or weak there is nothing to cause a crack to start at the edges.

In the drawings these grooves or depressions in the web roll are shown not only under the outside margins but under all margins so that in case a web is run which is one-quarter, one-half or three quarters the width of the standard web, the outside margins in all cases will be free from strain. In case of the turning bars a depression is shown at the center. It will be seen, therefore, that by this method of relieving the strain the difficulties 'which have been mentioned are substantially overcome without materially increasing the cost of the equipment or introducing any diiiiculties into the running of the machine.

Although I have illustrated and described only a single way of applying the invention to the web rolls and turning bars, I am aware of the fact that modifications can be made therein by any person Skilled in the art without departing from the scope of the invention as expressed in the claims, therefore, I do not wish to be limited in these respects but what I do claim is l. In a printing machine, a stationary web turning bar for a newspaper web having spaced shallow grooves between its ends In testimony whereof I have hereunto set adapted to lie under each margin between my hand in the presence of two subscribing the edges of the web. witnesses.

2. In a printing machine,l a. stationary web HENRYv A. VISE WOOD. 5 turning bar having a. shallow groove located Witnesses:

l under the margin at an angle to 'zi-plane per- P. M. STOEBER,

pendioular to the axis of the bar. 'LIpniAN C. JONES.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

